Question

我有2个表：人员和帐户（一对多关系）。

在我的Person课程中，我有：

@Entity
@Table(name="persons")
public class Person {

    @Id
    @Column(name="id")
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private int id;
    private String name;
    private String username;
    private String password;
    private String country;
    private boolean admin;

    @OneToMany(mappedBy="person")
    @Cascade({CascadeType.ALL})
    private Set<Account> accounts;

    public Person(String name, String username, String password, String country, boolean admin) {
        this.name = name;
        this.username = username;
        this.password = password;
        this.country = country;
        this.admin = admin;
    }

    public Person(){ }

    //getters and setters
}

在我的帐户课程中，我有：

@Entity
@Table(name="accounts")
public class Account {

    @Id
    @Column(name="accountId")
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private int accountId;
    private int balance;
    private String currency;

    @ManyToOne
    @JoinColumn(name="id")
    private Person person;

    public Account(int balance, String currency) {
        this.balance = balance;
        this.currency = currency;
    }

    private Account(){ }

    //getters and setters
}

我使用SQL服务器，并使用以下代码创建表：

CREATE TABLE persons(
    id int IDENTITY(1,1) PRIMARY KEY NOT NULL,
    name nvarchar(30) NOT NULL,
    username nvarchar(30) NOT NULL,
    password nvarchar(30) NOT NULL,
    country nvarchar(30) NOT NULL,
    admin bit NOT NULL
);

CREATE TABLE accounts(
    accountId int IDENTITY(10000,1) PRIMARY KEY NOT NULL,
    balance int NOT NULL,
    currency nvarchar(5) NOT NULL,
    userId int NOT NULL foreign key references persons(id)
);

在我的控制器中，我保存了一个人并且它有效，然后当我尝试保存该人的2个帐户时，我收到以下错误：java.sql.SQLException: Invalid column name 'id'.代码：

    Person person = new Person("Maurice","vvvvv","ccccc", "France", true);
    this.personService.addPerson(person);
    Account account1 = new Account(1000, "eur");
    Account account2 = new Account(700, "gbp");
    account1.setPerson(person);
    account2.setPerson(person);
    this.accountService.addAccount(account1);
    this.accountService.addAccount(account2);

这不是我第一次使用一对多的关系，但我之前没有遇到过此错误。

完整的堆栈跟踪：

SEVERE：servlet [appServlet]的Servlet.service（）与上下文有关 path [/ BankingApp]抛出异常[请求处理失败;嵌套异常是org.hibernate.exception.SQLGrammarException：不能具有根本原因java.sql.SQLException的执行语句：无效列名称＆＃39; id＆＃39;。在 net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic（SQLDiagnostic.java:372） at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken（TdsCore.java:2988）在net.sourceforge.jtds.jdbc.TdsCore.nextToken（TdsCore.java:2421）at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults（TdsCore.java:671）at at net.sourceforge.jtds.jdbc.JtdsStatement.processResults（JtdsStatement.java:613）在 net.sourceforge.jtds.jdbc.JtdsStatement.executeSQL（JtdsStatement.java:572）在 net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeUpdate（JtdsPreparedStatement.java:727）在 org.apache.commons.dbcp2.DelegatingPreparedStatement.executeUpdate（DelegatingPreparedStatement.java:98）在 org.apache.commons.dbcp2.DelegatingPreparedStatement.executeUpdate（DelegatingPreparedStatement.java:98）在 org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate（ResultSetReturnImpl.java:208）在 org.hibernate.id.IdentityGenerator $ GetGeneratedKeysDelegate.executeAndExtract（IdentityGenerator.java:96）在 org.hibernate.id.insert.AbstractReturningDelegate.performInsert（AbstractReturningDelegate.java:58）在 org.hibernate.persister.entity.AbstractEntityPersister.insert（AbstractEntityPersister.java:3032）在 org.hibernate.persister.entity.AbstractEntityPersister.insert（AbstractEntityPersister.java:3558）在 org.hibernate.action.internal.EntityIdentityInsertAction.execute（EntityIdentityInsertAction.java:98）在org.hibernate.engine.spi.ActionQueue.execute（ActionQueue.java:492）在 org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction（ActionQueue.java:197）在 org.hibernate.engine.spi.ActionQueue.addInsertAction（ActionQueue.java:181）在 org.hibernate.engine.spi.ActionQueue.addAction（ActionQueue.java:216）在 org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction（AbstractSaveEventListener.java:334）在 org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:289）在 org.hibernate.event.internal.AbstractSaveEventListener.performSave（AbstractSaveEventListener.java:195）在 org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:126）在 org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient（DefaultPersistEventListener.java:206）在 org.hibernate.event.internal.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:149）在 org.hibernate.event.internal.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:75）在 org.hibernate.internal.SessionImpl.firePersist（SessionImpl.java:811）在org.hibernate.internal.SessionImpl.persist（SessionImpl.java:784）在org.hibernate.internal.SessionImpl.persist（SessionImpl.java:789）在com.haynes.dao.AccountDAOImpl.addAccount（AccountDAOImpl.java:26）在 com.haynes.services.AccountServiceImpl.addAccount（AccountServiceImpl.java:21） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection（AopUtils.java:317）在 org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint（ReflectiveMethodInvocation.java:190）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:157）在 org.springframework.transaction.interceptor.TransactionInterceptor $ 1.proceedWithInvocation（TransactionInterceptor.java:99）在 org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction（TransactionAspectSupport.java:281）在 org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:96）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:179）在 org.springframework.aop.framework.JdkDynamicAopProxy.invoke（JdkDynamicAopProxy.java:207）在com.sun.proxy。$ Proxy135.addAccount（未知来源）at com.haynes.controllers.Controller.addPerson（Controller.java:47）at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke（InvocableHandlerMethod.java:221）在 org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:137）在 org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle（ServletInvocableHandlerMethod.java:110）在 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod（RequestMappingHandlerAdapter.java:776）在 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:705）在 org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:85）在 org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:959）在 org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:893）在 org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:966）在 org.springframework.web.servlet.FrameworkServlet.doGet（FrameworkServlet.java:857）在javax.servlet.http.HttpServlet.service（HttpServlet.java:622）at org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:842）在javax.servlet.http.HttpServlet.service（HttpServlet.java:729）at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:292）在 org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:207）在 org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:240）在 org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:207）在 org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:212）在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:106）在 org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:502）在 org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:141）在 org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:79）在 org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:616）在 org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:88）在 org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:528）在 org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1099）在 org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:670）在 org.apache.tomcat.util.net.AprEndpoint $ SocketProcessor.doRun（AprEndpoint.java:2508）在 org.apache.tomcat.util.net.AprEndpoint $ SocketProcessor.run（AprEndpoint.java:2497） at java.util.concurrent.ThreadPoolExecutor.runWorker（Unknown Source） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（Unknown Source）在 org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（未知来源）

Answer 1

@JoinColumn(name="id")应为@JoinColumn(name="userId")

因为userId在帐户表

中用作外键

Answer 2

看起来好像Person.java或Account.java的id列字段在数据库中存储为Id，而在您的实体中，您将其命名为id。

您能否分享Person.java类和错误的完整堆栈跟踪，请同时检查您的数据库以确保字段正确

感谢。

hibernate one to many annotation无效的列名

2 个答案: